Transmission Grid

Transmission 101

What is the electric transmission grid and how does it serve local customers and electric cooperatives?

The electric grid is the network of power lines that carries electricity from power plants to residential, industrial and commercial customers. To work effectively, electricity must at all times flow safely and reliably throughout the grid so the power is available when needed.

Most people are familiar with the "distribution" power lines and poles that run alongside roadways or are installed underground in neighborhoods. These lines distribute electricity to our homes and businesses.  The part of the network that carries high-voltage electric power from generating stations to distribution facilities is called the "transmission grid."  (View an interactive map of the U.S. electric grid.)

Articles and Information Resources

• The U.S. electric grid is a complex network of independently owned and operated power plants and transmission lines. Aging infrastructure, combined with a rise in domestic electricity consumption, has forced experts to critically examine the status and health of the nation's electrical systems.  A ten-part series of stories from National Public Radio has been published on NPR.org, examining the costs, the politics and other challenges of upgrading the country's electricity grid.           
• National Geographic Magazine has recently published an extensively researched feature article on The 21st Century Grid outlining the need for additional infrastructure to support the growing need for modern living and green energy.  The article also includes a Photo Gallery, interactive maps, energy saving tips, and a link to additional consumer information called The Great Energy Challenge.
• A recent article from Carolina Country magazine offers a terrific overview of transmission and a discussion of the future of the grid, explaining how the electrical power industry today is stepping up activity toward improving the grid and building new transmission infrastructure.
• Virginia Energy Sense is an information source for the Commonwealth of Virginia designed to assist citizens seeking ways to lower their monthly energy bills.  Our energy use is growing.  Houses have been getting bigger, generally speaking, and we own more devices that require more power. On the site, select "Energy 101" to learn more.